close Picker on ESC in DateInput

[vishalkr07]

Now the Picker closes when ESC is pressed in the DateInput

[codecov]

Codecov Report

Merging #826 (fb67305) into 9.x (46a4444) will increase coverage by 0.13%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              9.x     #826      +/-   ##
==========================================
+ Coverage   90.64%   90.78%   +0.13%     
==========================================
  Files          10       10              
  Lines         716      716              
  Branches      214      214              
==========================================
+ Hits          649      650       +1     
+ Misses         58       57       -1     
  Partials        9        9              

Impacted Files	Coverage Δ
src/mixin/CalendarMixin.js	86.79% <0.00%> (+1.88%)	⬆️

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